3 years ago

Hãy chỉ tôi hoá học. Tôi không thể viết nhưng tôi có bức ảnh

Chemistry

1 answer:

Digiron [165]3 years ago

8 0

Answer:

what can you speak English

You might be interested in

If i were to visit mystery island in january would i have to bring an umbrella?

Nitella [24]

Yes, you would have to bring an umbrella because if the island is named mystery you never know when it'll rain.

3 0

3 years ago

A volume of 125 mL of H2O is initially at room temperature (22.00 ∘C). A chilled steel rod at 2.00 ∘C is placed in the water. If

inn [45]

Answer:

$m_{steel}=54.47gSteel$

Explanation:

Hello,

In this case, one considers that the heat lost by the water is gained by the steel rod:

$\Delta H_{water}=-\Delta H_{steel}$

That in terms of masses, heat capacities and temperatures is:

$m_{water}Cp_{water}(T_F-T_{water})=-m_{steel}Cp_{steel}(T_F-T_{steel})$

Thus, solving for the mass of the steel rod, we obtain:

$m_{steel}=\frac{m_{water}Cp_{water}(T_F-T_{water})}{-Cp_{steel}(T_F-T_{steel})} \\\\m_{steel}=\frac{125mL*\frac{1g}{1mL}*4.18\frac{J}{g^oC} (22.00^oC-21.10^oC)}{-0.452\frac{J}{g^oC}*(2.00^oC-21.10^oC)} \\\\m_{steel}=54.47gSteel$

Best regards.

6 0

4 years ago

Which equation is correct if the

Nataliya [291]

Answer:

Explanation:

it's B because 4 x 2 is 8 and we all know 8 x 8 is 64. So the answer is B.

7 0

3 years ago

what biome has many nocturnal animals that burrow underground during the day that are active at night

hram777 [196]

Answer:

it could be maybe a raccoon or a possum

Explanation:

4 0

3 years ago

Be sure to answer all parts. Show the overall reaction for formation of racemic 3−bromohexane from (E)−3−hexene by entering the

natima [27]

Answer:

(E)-3-hexene treated with bromine to form racemic mixture.

Explanation:

(E)-3-hexene treated with bromine to form (S)−3−bromohexane and (R)−3−bromohexane.

The chemical reaction is as follows.

3 0

3 years ago